Hello Robert, When didappxyour grandparents marry..? I can have a look to see if I can find their marriage record ref.
I did find a William Henry CARELESS birth ref in Wolverhampton in 1905. In fact there were two Wm Henry Careless born in that year in same district. The marriage cert of your Wm H. would give his fathers name+ occupation etc, on cert. Just trying to help. Patrick. e/m= email@example.com